Wet Screens: Characterization of the physical properties of wet screens and quantification of their effect on energy use in greenhouses

Research output: Book/ReportReportProfessional

Abstract

The application of new cultivation techniques (Het Nieuwe Telen) in Dutch greenhouses heavily relies on using one or more movable screens. Screens also affect the control of the greenhouse climate by radiation exchanges and air and humidity exchanges between the lower and upper part of the screens. This directly influences energy saving. The objectives of the project were the quantification of the screen properties by standardised measurements: thermal properties such as emissivity, aerodynamic properties such as air permeability and humidity transport characteristics. From the measured properties the overall potential energy saving can then be calculated under defined conditions for an objective comparison of the performance of different screen materials in dry and wet conditions. This helps growers to understand more about screen properties and allows them to make an informed choice of investment and practical usage. The results show that screens low permeability and low emissivity give highest energy saving.
Original languageEnglish
Place of PublicationBleiswijk
Number of pages62
DOIs
Publication statusPublished - 2021

Publication series

NameReport / Stichting Wageningen Research, Wageningen Plant Research, Business Unit Greenhouse Horticulture
No.WPR-1099

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